Answer:
Virus
Explanation:
The question is basically asking what causes infections and diseases. There are certain things that can cause infections and diseases such as, a virus, fungi, bacteria, or parasites. So a virus does fit in this statement
I hope this helps :)
They wanted to become U.S citizens to have a better life.
Well, I'm assuming you're talking about these terms...
Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain
A good way to remember this is;
Does King Philip Come Over For Great Spaghetti
(However, this is in order from most specific to least specific)
The immune system. Hope this helped
